Any random series of events, like ocean waves lapping on a shore, could be a clock, and physicists have now devised a mathematical procedure for building such strange clocks and measuring their accuracy.
“How can you turn anything into a watch? We decided to approach that problem by thinking about the process that is, in some sense, least watch-like.” Mark Mitchison At Trinity College Dublin, Ireland.
A watch can be used to measure time because it keeps regular time.
Source: www.newscientist.com
